org.pentaho.di.core.util

Class DateDetector

java.lang.Object

org.pentaho.di.core.util.DateDetector

public class DateDetector
extends Object

Method Summary

Modifier and Type	Method and Description
static String	detectDateFormat(String dateString)
static String	detectDateFormat(String dateString, String locale)
static String	detectDateFormatBiased(String dateString, String locale, String desiredKey) Finds a date format that matches the date value given.
static String	getDateFormatByRegex(String regex)
static String	getDateFormatByRegex(String regex, String locale)
static org.apache.commons.collections.BidiMap	getDateFormatToRegExps(String locale)
static Date	getDateFromString(String dateString)
static Date	getDateFromString(String dateString, String locale)
static Date	getDateFromStringByFormat(String dateString, String dateFormat)
static String	getRegexpByDateFormat(String dateFormat)
static String	getRegexpByDateFormat(String dateFormat, String locale)
static boolean	isValidDate(String dateString)
static boolean	isValidDate(String dateString, String dateFormat)
static boolean	isValidDateFormatToStringDate(String dateFormat, String dateString)
static boolean	isValidDateFormatToStringDate(String dateFormat, String dateString, String locale)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getRegexpByDateFormat

public static String getRegexpByDateFormat(String dateFormat)

Parameters:

dateFormat - - date format for get regexp

Returns:

regexp for given date format

getRegexpByDateFormat

public static String getRegexpByDateFormat(String dateFormat,
                                           String locale)

Parameters:

dateFormat - - date format for get regexp by locale

Returns:

regexp for given date format

getDateFormatByRegex

public static String getDateFormatByRegex(String regex)

Parameters:

regex - - regexp for parse date format from string
NOTES: if regex could be used for US and EU locale. It returns europeans locale. For en_US locale please use getDateFormatByRegex( String regex, String locale )

Returns:

String string wich represented Date Format

getDateFormatByRegex

public static String getDateFormatByRegex(String regex,
                                          String locale)

Parameters:

regex - - regexp for parse date format from string by locale

Returns:

String string wich represented Date Format

getDateFromString

public static Date getDateFromString(String dateString)
                              throws ParseException

Parameters:

dateString - date string for parse

Returns:

Date converted from dateString by detected format

Throws:

ParseException - - if we can not detect date format for string or we can not parse date string

getDateFromString

public static Date getDateFromString(String dateString,
                                     String locale)
                              throws ParseException

Parameters:

dateString - date string for parse

Returns:

Date converted from dateString by detected format

Throws:

ParseException - - if we can not detect date format for string or we can not parse date string

getDateFromStringByFormat

public static Date getDateFromStringByFormat(String dateString,
                                             String dateFormat)
                                      throws ParseException

Parameters:

dateString - date string for parse

dateFormat - format which should be applied for string

Returns:

Date converted from dateString by format

Throws:

ParseException - if we can not parse date string

detectDateFormat

public static String detectDateFormat(String dateString)

Parameters:

dateString - - date string for detect date format

Returns:

String string which represented Date Format or null

detectDateFormat

public static String detectDateFormat(String dateString,
                                      String locale)

Parameters:

dateString - - date string for detect date format

Returns:

String string which represented Date Format or null

detectDateFormatBiased

public static String detectDateFormatBiased(String dateString,
                                            String locale,
                                            String desiredKey)

Finds a date format that matches the date value given. Will try the desiredKey format before attempting others. The first to match is returned.

Parameters:

dateString - the literal value of the date (eg: "01/01/2001")

locale - the locale in play

desiredKey - the desired format (should be a valid key to DATE_FORMAT_TO_REGEXPS)

Returns:

The key to the format that matched or null if none found.

getDateFormatToRegExps

public static org.apache.commons.collections.BidiMap getDateFormatToRegExps(String locale)

isValidDate

public static boolean isValidDate(String dateString,
                                  String dateFormat)

Parameters:

dateString - - string for check

dateFormat - - format for check

Returns:

true if we can parse string by format without exception

isValidDate

public static boolean isValidDate(String dateString)

Parameters:

dateString - - string for check

Returns:

true if we can parse string without exception

isValidDateFormatToStringDate

public static boolean isValidDateFormatToStringDate(String dateFormat,
                                                    String dateString)

Parameters:

dateFormat - - format which we will try to apply for string

dateString - - string which contains date

Returns:

true if we found that we know dateFormat and it applied for given string

isValidDateFormatToStringDate

public static boolean isValidDateFormatToStringDate(String dateFormat,
                                                    String dateString,
                                                    String locale)

Parameters:

dateFormat - - format which we will try to apply for string

dateString - - string which contains date

locale - - locale for date format

Returns:

true if we found that we know dateFormat and it applied for given string